Average Error: 0.0 → 0.0
Time: 556.0ms
Precision: binary64
\[\cos \left(2 \cdot x\right) - x\]
↓
\[\cos \left(2 \cdot x\right) - x\]
\cos \left(2 \cdot x\right) - x
↓
\cos \left(2 \cdot x\right) - x
double code(double x) {
	return ((double) (((double) cos(((double) (2.0 * x)))) - x));
}
↓
double code(double x) {
	return ((double) (((double) cos(((double) (2.0 * x)))) - x));
}

Error

Bits error versus x

Try it out

Your Program's Arguments

Results

Enter valid numbers for all inputs

Derivation

  1. Initial program 0.0

    \[\cos \left(2 \cdot x\right) - x\]

  2. Final simplification0.0

    \[\leadsto \cos \left(2 \cdot x\right) - x\]

Reproduce

herbie shell --seed 2020153 
(FPCore (x)
  :name "(- (cos (* 2 x)) x)"
  :precision binary64
  (- (cos (* 2.0 x)) x))